Success rates may be misleading if they are based on a small number. We omit graphed data if there are less than 20 transfers in a segment. You can find these outcomes expressed as a fraction in the table following the graphed data. The bottom of the fraction indicates the number of transfers and the top shows the number of live births.

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Swipe table to view data.

Fresh Embryos

< 35

36-37

38-40

41-42

Donor

Live Birth Rate

6 / 15

3 / 8

5 / 9

3 / 8

9 / 16

Average Embryos Transferred

1.5

1.5

1.4

1.6

1.2

Number of Transfers

15

8

9

8

16

Thawed Embryos

< 35

36-37

38-40

41-42

Donor

Live Birth Rate

60.0

53.2

58.3

61.9

39.1

Average Embryos Transferred

1.3

1.4

1.2

1.5

1.3

Number of Transfers

75

47

36

21

23

Banked Embryos / Oocytes

< 35

36-37

38-40

41-42

Donor

Number of Cycles

131

104

118

58

N/A

Based on 2015 data as reported to the CDC. This data has not been verified. A message from the CDC, "A Comparison of clinic success rates may not be meaningful because patient medical characteristics and treatment approaches vary from clinic to clinic."